Apparatus for making plate glass



June 4, 1929. c. E. HENDERSON 1,716,312

APPARATUS FOR MAKING PLATE GLASS Filedeb. 20J 1928 5 sheets-sheet 1 :Vx A f' Q I Il," 7 g\ INVENTOR June 4, 1929. c. E. HENDERSON APPARATUS FOR MAKING PLATE GLASS INVENTOR Filed Feb. 20, 1928 June 4, 1929.

c* E. HENDERSON APPARATUS FOR MAKING PLATE GLASS Filed Feb. 20, 1928 3 Sheets-Sheet 3 Patented June 4, 1929.

UNITED STATES PATENT Orifice.`

CHESTER n HENDEIisON, OF KOKOMO,` INDIANA, AssIGNOIt "ro PITTSBURGH PLATE GLASS COMPANY', A CORPORATION or rE'rr/rrsm'nraNIav APPARATUS FOR MAKING PLATE GLASS- y lApplication tiled February 20, 1928.` Serial No. 255,564.

The invention relates to apparatus for making plate glass continuously from a tank by a rolling process. cipal objects the provision of an improved apparatus for producing`glassrelatively free from reani,A blister and other defects ordinarilypresent in continuously rolled sheets as heretofore produced. Certain em# vbodiinents of the invention are illustrated in 1o the accompanyingdrawings, wherein:

Figure 1 is a vertical section on the line I-I of Fig. '3. Fig. 2 is a partial plan View and partial section taken on the line II--II of Fig. 1. (Fig. 3 is, asection on the line III- III of Fig. 1. And Fig. 4 is a diagrammatic sectional view showing a modification. 4

Referring to the drawings. 1 is the outlet end of a melting tank provided with the cutl off gate 2 and an outlet trough 3; 4 and 5 are sizing rolls in position to receive the glass discharged from the trough; (i, 7. 8,'etc. are rolls constituting a runway 4for receiving the sheetA 9 which is formed between the sizing rolls;8| is a truck carrying the sizing rolls and 'runway and mounted upon the rails 9, 9; and 10 is a. leer provided with the rolls 11 for receiving the continuously formed glass sheet.

,'30 The front wall 12 of the tank which carries the outlet. trough 3- is carried in a hollow water cooled' frame 13. which is posi- 1 tioned for convenient removal and replacenient from an overhead crane. provided with chains 1 4 for engaging suitable lugs carried by the frame 13.- Extending transversely of the frontI ot" the tank is a rail 15 which carries the frame 13, such frame being provided with wheels 16 engaging the rails. This provides a. means for the lateral adjustment of the trough 3 and the discharge from such trough upon the rolls.

The rail 15 is mounted forvertical adjust-- inent upon a series of screws 16 carrying the nut 17 engaging the top of the plate 18,`

such plate inturn being carried by the beams 19 constituting a part of the supporting framework of the tank. This 'are rangement provides for the' vertical adjustnient of the trough 3 so that the glass may be 4withdrawn from any desired elevation with respect to the level of the glass in the tank. The amount of flow through 'the trough 3 is regulated by the gate 2O which Ithas for its prin-` is movable up and down in the guide 21 by means of the screw 22. y

As indicated in Figs. 1 and 2, the sizing rolls 4 and 5 are inclined to the horizontal and are positioned sov that the discharge-.23"

'from the trough flows into the recess be tween the rolls adjacent their upper ends. F rom this point, the inass of. glass Hows downward along the recess, thus providing a. n 'iass of glass of substantially the lengthv of the finishedl Sheet 9 from which such.

sheet is rolled'. y In order to control the endwisc movementof the mass of glass, suit.-

able end inembers'24 24 (Figs. 2 and 3) are provided,- suchn'ieinbers being known in the art as guns and fitting ldou-'n into the V-slfiaped recess lbetu'feen the rolls. In Order to provide' for the'. tilting ofthe rolls, vthey `arc journaled iutA a' roll frame 25 having the standards 2,6 and 27 and'pivoted to the truck 8 at, 28 (llig-).4 :The other end of the frame 25 is raised and'lowered by means of the. screw 29, which has' its :lower endv threaded through the' nut- 30 carried on the truck frame and has itsupper end pivoted at 31 tothe roll frame. In this manner, the

inclination of the rolls' may be varied to meet requirements. The truck may also be shifted laterally to vary the position of the discharge 23 upon' the rolls by means of the screw 32 extending through a nut 33 i11 the truck frame and 'driven from the motor 34. The rolls are watercooled, being provided at.- their ends with the swivels 3'conne`cted with water circulating pip'es'ti. These sizing rolls and also the" rolls 6, 7,' 8, etc. constituting the apron or runway are driven from the shaft 37, which also drives the leer rolls 11. vk'Ihis line shaft basan extension 38 which drives the countershaft 39 through the intermediary of vsuitable worm gearing in the casii'ig 4t). The4 line' shaft 3 9 is provided with a sprocket vwheel 41 (Fig. 1') around which passes the sprocket chain 42, such 4sprocket chain also passing over the idleis 43, 44, 45 and-46, vvhi'ch has' its upper flight inengagenient withsuitable lsprockets on thel ends of the runway rolls 6 8, -etc.

VThe shaft. 38 also hasu'an extension 47 (Fig.

2) by means of whih'the tumbler shafts 48 and 49 are driven throughthe intermeother respects. this construction follows that of Figs. l. to 3,'the finished -plate being carl'tried'y away by asuitable apron oi,1imway and lead through `a 'roller leer. In this con- .'struction, however', as 1n the other. the glass discharges in a relatively (thick stream to L the ifecess'at'the upper ends of the rolls, and

other ends, and a runway for receiving thelsheet formed in the pass between the rolls,

then-flows "downward along the recess so as "to supplya body of the necessary length tor 'producing sheet having the requisite The combination with a glass melting tank having.r an outlet, ofV a pair of driven rolls beneath such outlet inclined to the hori- .zontal in position to receive therebetween adjacent their ends the flow from said outlet., and inclined downward toward their the said outlet having av width which is only a fraction of the width of the sheet produced and positioned to discharge at the upper ends of the rolls so thatthe mass of glass thus `supplied between the rolls lows'down the inclined recess to provide a mass corresponding approximately in length to the width of the finishedsheet.

3. The combination with a glass melting tank having an outlet, of a pair of driven rolls beneath sncli outlet inclined to the horizontal in position to receive therebetweenthe tlow of; glass from said outlet adjacent the roll ends which are elevated above the level of the other ends and a runway -beneath the pass through the rolls on the lower side thereof extending downwardly and laterally.

4. The combination with a glass melting tank having an outlet extending, laterally from the tank. ol apair of driven sizing rollslocated beneath the end of said outlet, such rolls being inclined to the horizontal and positioned oi center with respect to said outlet so that the glass flowing downward from the outlet is received in to the recess or pocket between the rolls adjacent the upper end thereof.

5. The combination with a glass melting tank having an outlet, of a pair of driveli rolls beneath such outlet inclined to the horizontal in position to receive therebe-` tween the flow of glass from said outlet adjacent the roll ends` which are elevated above the level of the other ends and means for varying thc inclination of the rolls-,thc width ot' the body of glass discharged from the outlet having a width which is only a fraction ot the width of the finished sheet.

6. The combination with a glass melting tank having an outlet, of a pair of driven rolls beneath such outlet inclinedv to the horizontal in position to receive therebetween tlie flow of glass from said outlet adjacent the roll ends which are elevated above thc level of the other ends, and means for shifting the. rolls endwise beneath the outlet, such outlet having a width-whicli is only a traction of the width of the finished sheet.

7. The combination with aglass melting tank having anoutlet, `of a pair of driven rolls beneath such outlet inclined tothe horizontal in position to receive therebetween tlie How of glass from said outlet adjacent the roll ends which are elevated above the level of the other ends, means for varying the inclination of the rolls, and means for shitting the rolls endwise beneath the outlet, such outlet having a width which is only a fraction ofthe width of the finished sheet.

8. The combination with a glass-melting tank havin,f r an outlet, of a pair of driven rolls beneath such outlet inclined to the horizontal in position to receive therebetween tlie flow of glass from said outlet adjacent the roll ends which are elevated above the level of the other ends, and means for shifting the outlet laterally to vary the point of discharge with respect to the rolls, such outlet having a w'idth which is only a fraction ot' the width of the finished sheet.

9. The combination with a glass melting tank having an outlet, of a pair of driven rolls beneath such outlet inclined to the horizontal in position to receive therebetween the iow of glass from said outlet adjacent the roll ends which are elevated above the level of the other ends, and means for shifting the outlet vertically, such outlet hav- 

